Different values by sweeping variables at the parametric table of EES and by running them singularly at the main command window?

Sometimes when I run parametric table of EES (sweep a variable) I have get unstable answer at some rages. For example for 0, 1, 2, 3 I get 10, 0.005, 9.5, 0.00000014 But when I don't use...

02 March 2019 1,625 6 View

What is the chemical exergy of humid air relative to water?

Dear all, I have water, humid air and ammonia in a system and I want to do an exergy and thermoeconomic analysis. If I take the water at 25 and 1atm as a dead state, how can I calculate the exergy...

31 December 2018 7,044 5 View

Why does scaling occur at boiling?

Dear all, Why does scaling occur at boiling? (can we say that the maximum concentration increase at surface at boiling so scaling occurs?) If boiling does not occur, Does we have scaling at the...

10 November 2018 9,205 6 View

When does scaling occur?

Hello, I want to know how can I find and calculate at what condition scaling occur? For example if I have a water that contain 25000 ppm Ca2+ and 500 ppm SO42-, does scaling occur at the surface...

10 November 2018 9,090 0 View

What is the best way to desalinate very high saline water?

Dear all researchers, What is the best way to desalinate very high saline water (up to +180000 ppm) for the purpose of ZLD? Can we use MED, MSF or TVC? (I know the scaling formation, but is...

10 November 2018 1,091 3 View

When we calculate flashing process with mass and energy balance and when we calculate it with "non equilibrium allowance"(NEA)?

Hi all Sometimes the flashing process are calculated with mass and balance equations like the following...

09 October 2018 7,184 1 View

What is the physical meaning of "non-equilibrium allowance"(NEA)?

Hi What is the physical meaning of "non-equilibrium allowance"(NEA) in water desalination? thanks

09 October 2018 4,947 2 View

Which reference is perfect to read about flashing process?

Dear all Which book has detailed explanations about flashing process? Thanks

09 October 2018 228 17 View

Does an EES program can be used as a function of a MATLAB program?

Dear all researchers, I want to know that if I have an EES program, can i use it as a function of a MATLAB program? Thanks,

06 July 2018 8,115 7 View

Which software is good for simulation of power plants & desalination systems?

Hi I want to know that which software is good to simulate all kinds of power plants & desalination systems? I want a very flexible software to simulate novel systems that are not common some...

04 May 2018 8,598 6 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View